Pressure-gage.



No. 631,809. Patented Aug. 29, I899. A. L. NICLA, J. H. OPTENBERG & E.H. SONNEMAN.

PRESSURE GAGE.

(Application filed May 20, 1899.) (Io Model.)

UNITED, STATES PATENT OFFICE.

ALI-BERT L. NIOLA, JOHN H. OPTENBERG, AND EMIL H. SONNEMAN, OF

SI'IEBOYGAN, \VISCONSIN.

PRESSURE-GAG E.

SPECIFICATION forming part of Letters Patent No. 631,809, dated August29, 1899.

Application filed May 20, 1899. fierial No. 717,697. (No model.)

To (all 1071,0721, it nz/a/y concern:

Be it known that we, ALBERT L. NICLA, .lonn II. OPTENBERG, and EMIL II.SONNEMAN, citizens of the United States, and residents of Sheboygan, inthe county of Sheboygan and State of Wisconsin, haveinvented certain newand useful Improvements in Pressure-Gages; and we do hereby declare thatthe following is a full, clear, and exact description thereof.

Our invention has for its especial object to provide for an automaticalarm when fluid under pressure attains a predetermined degree of riseor fall; and it consists in combiningan automatic signal-actuatingmechanism with an ordinary pressure-gage, as hereinafter particularlyset forth with reference to the accompanying drawings and subsequentlyclaimed.

Figure l of the drawings represents a front elevation of one type ofpressure-gage partly broken and combined with a signal-actuatingmechanism, the organization being such that said mechanism isautomatically operative at any predetermined degree of pressure, eitherhigh or low; and Fig. 2 represents apla-n View, in horizontal section,indicated byline 2 2 in the preceding figure.

Referring by letter to the drawings, A indicates the casing of awell-known form of Bourdon-type pressure-gage, B the tubular spring ofsame, and O the toothed segmentlever in mesh with the pinion D on theindicatonspindle E of the gage. In the present showing the link F ineceentrically-adjustable connection with spring B and lover O isprovided with a central right-angle branch F, and an insulating-boss bon the outer end of the arm engagesa yoke G, having lateral arms a cextending in opposite directions therefrom. The yoke is in pivotalconnection with a head d of a binding-post H, this post and its headbeing separated from the gagecasing by a strip I and sleeve J ofinsulating material. Anotherbinding-post K,separated from thegage-casing by the strip I of insulating material and a sleeve L ofsimilar material, supports a metal spring-plate M, having recurved endsprovided with right-angle extensions e e in opposition to the arms 0 cof yoke G aforesaid.

Extending through the gage-casing to bear upon insulating material N onthe springplate M are adjusting-screws 0 O, and locknuts P P arearranged on the screws outside of said casing.

By means of wires Q R the binding-posts H K are placed in circuit withan electric hell or buzzer and battery not shown) of common knowledgemore or less remote from the pressure-gage.

In practice the gage-nipple S is connected to an apparatus containingpressure and the screws 0 O are adjusted to cause a contact of ayoke-arm with an extension of the recurved spring-plate M when saidpressure rises above or falls below predetermined degrees, whereby theelectric circuit is closed and the alarm actuated. For instance, if itbe desirable to sound an alarm when pressure has decreased to twentypounds, the low-pressure adjusting-screw O is operated to push in onspring-plate M until'the right-angle extension 6' of same will havecontact with yokearm 0' when the gage indicates the said number ofpounds. If an alarm is wanted when the pressure reaches say, one hundredpounds, the high-pressure adj usting-screw O is operated to push in onthe spring-plate M until the right-angle extension e of same will havecontact with yoke-arm 0 when the gage-indi cator marks 100. From theforegoing it will be understood that when the pressure rangesbetweenpredetermined low and high degrees the alarm isidle; but whenonce set in operation it will continue until said pressure is eitherraised or lowered to come within the the predetermined limits. t

\Vhile we show the apparatus organized to sound an alarm when thepressure rises or falls beyond predetermined limits, it is practical,and in some instances desirable, to organize said apparatus so as, toonly give an alarm at one predetermined degree of pressure, either highor low. It is also to be understood that while we particularly describethe mechanism auxiliary to the gage as designed to operate an audiblesignal, it may be utilized in connection with a visible signal locatedmore or less remote from said gage.

Having thus described our invention, what We claim as new, and desire tosecure by Letters Patent, is

1. A pressure-gage of the organization herein set forth having the linkconnecting its Bonrdon spring and toothed segment provided with acentral right-angle arm, a binding-post, ayoke in pivotal connectionwith the binding-post, an insulating-boss on the link arm engaging theyoke, a spring-plate having at least one recnrved end provided with anextension in opposition to an arm of said yoke, anotherbinding-post inconnection with the spring-plate, means for insulating the binding-postsand said spring-plate from the gage-casing, and an adj Listing-screw ininsulated contact with the aforesaid spring-plate, said binding-postsbeing for wire connection with an electric signal.

2. Apressnre-gage of the organization herein set forth having the linkconnecting its Bonrdon spring and toothed segment provided with acentral right-angle arm, a binding-post, a yoke in pivotal connectionwith the binding-post and provided with lateral arms extending inopposite directions, an insnlaiinghoss on the link-arm engaging theyoke, a springplate having recurved ends provided with extensions inopposition to the yoke-arms,anotherbinding-postin connection with thespring-plate, means for insulating the binding-posts and saidspring-plate from the gagecasing and adjusting-screws in insulatedcontact with the aforesaid spring plate in opposite directions from thebindingposts, the latter being for wire connection with an electricsignal.

In testimony that We claim the foregoing we have hereunto set our hands,at Sheboygan, in the county of Sheboygan and State of Wisconsin, in thepresence of two Witnesses.

ALBERT L. NIOLA. JOHN H. OPTENBERG. EMIL ll. SONNEMAN. Witnesses:

O'r'ro W. STAHL, THOMAS OLsoN.

